Twister head driving mechanism for wool spinning machines



Oct. 6, 1953 Filed Oct. 4, 1951 F. B. KELLIHER 2,654,212 TWISTER HEAD DRIVING MECHANISM FOR WOOL. SPINNING MACHINES v2 Sheets-Sheet 1 INVEX'HIHL- [Eon/01's B. Kel/iher Arr 1953 F. B. KELLIHER 7 2,654,212

-TWISTER HEAD DRIVING MECHANISM FOR WOOL SPINNING MACHINES Filed Oct. 4, 1951 2 Sheets-Sheet 2 INVESTOR.

Educ/s .B. Kelli/7e):

WMQW Patented Oct. 6, 1953 assigns aiwxsran nizanpmvme MEQHAMSMEOR WODL. SEINNING LLACHINES fiancisFBflfellilier- Whitinsvi1'Ie,.Ma's:,.assignor toZWliitimMachflm-Works, whitinsfv-illeg;.Masss-. a corporation of Massachusetts Applicatiomoctoher 4, 1951; swam 2493655 Thiswinvention relates to machines particularly designed fora-spinning wool cr othenrelati'vel'yslons textile fibers.

In one commercial type of wool spinning machine, a twister head is associated with each spinning spindle and these twister heads are located between the feed roll and the delivery roll of the spinning frame. The delivery roll is rotated at higher surface speed than the feed roll, so that a desired draft takes place in the roving between these two rolls.

The twister heads are to give the rovings a false twist as the rovings are being drafted. This false twist is thereafter removed as the rovings leave the delivery roll.

The amount of false twist for most favorable results is dependent on the stock or material, on the amount of draft and on the yarn count, and varies widely under different conditions.

It has been customary to vary the twister head speed by changing gears or sprockets in the twister head drive, and upwards of twenty-five change gears or change sprockets were commonly supplied with a wool spinning machine. This cut-and try method of determining the most favorable twister head speed was time-consuming and expensive, and the results were often only approximate.

It is the general object of my present invention to provide means in a wool spinning machine by which the relative speed of the twister heads 7 may be progressively varied and adjusted while the machine continues in operation. The changing results are plainly visible to the operator, who can thus quickly select the most favorable twister head speed for the particular conditions of operation.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings, in which:

Fig. 1 is a sectional end elevation, showing parts of the driving mechanism of a wool spinning machine; and

Fig. 2 is a front elevation of certain driving connections.

Referring to the drawings, I have shown a drum over which the rovings R pass from a supply roll or spool S to a pair of feed rolls H and I2, the roll l2 being positively rotated. Each roving then passes through a twister head T to a pair of delivery rolls l4 and I5, and the relative 'ZZ surface speeds of the driven rolls I 2 and M: is adi'iiisted 'tirprodiice tlie=desired draft.

"Erie'- drafted revings- R- their passthrough thread guides I! to travelers 18 on spinning rings 20 supported in fixed ring rails 2|. The rovings then pass to bobbins B on spinning spindles 22 mounted on vertically movable spindle rails 24.

The twister heads T are rotated by a twister cylinder through bands 3], and the spindles 22 are rotated from a main or spindle-driving cylinder through bands 36.

The specific means for driving and vertically reciprocating the spindles 22 and bobbins B forms no part of the present invention and may be of the construction disclosed in the prior Kooistra Patent No. 1,820,310, issued August 25, 1931.

Preferred driving mechanism for the main or spindle-driving cylinder 35 is shown in Fig. 2 and comprises a motor M which is connected by belts 4D to a countershaft 42, which in turn is connected by a chain 44 and associated sprockets to the main shaft which rotates the main cylinder 35. The speed of the main cylinder 35 may be varied by changing the speed of the motor M, or by providing suitable variable-speed pulleys for the belts 40.

A countershaft is driven from the main shaft 50 through a chain 62 and associated sprockets, and the countershaft 60 is connected with the twister cylinder shaft 64 through a driving belt 66 and associated variable-speed pulleys ll and 12.

These variable speed connections may be of any usual or suitable commercial form, and in themselves form no part of my present invention, which is not to be limited to the particular variable-speed construction shown.

In Fig. 2 I have shown a conventionalized form of the well-known Reeves type of variable speed driving mechanism.

As shown, a hand wheel 15 is connected through a worm 16 to a worm wheel 11 mounted on a sleeve 18. By angularly adjusting the sleeve 18, the axial spacing of the separate parts of the pulley 10 may be varied. The corresponding separate parts of the pulley 12 are yieldingly mounted, so that they may axially adjust themselves to the setting of the pulleys 10.

Details of similar adjusting structure are shown in Fig. 4 of Rosenfeld Patent #2,229,673, issued January 28, 1941.

The hand wheel 15 is preferably located at the side of the spinning frame, so that the operator can turn the hand wheel to vary the relative speed of the twister head cylinder 30, and

3 at the same time will be in a position to observe the effect of such change in relative speed on the operation of the machine. The best relative speed may thus be quickly selected.

By the provision of this manually adjusted variable speed mechanism at this strategic point in the twister head cylinder drive, much of the operators time is saved. The results are more accurate, and the expense of providing a, large number of change gears or change sprockets is avoided.

Having thus described my invention and the advantages thereof, 1 do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:

1. In a wool spinning machine, a plurality of spinning spindles, means to drive said spindles, a plurality of twister heads, a twister cylinder and shaft, driving connections between said cylinder and said twister heads, a power shaft, 3. variable-speed mechanism between said power shaft and said cylinder shaft, and manual control means for said variable-speed mechanism ef- '4 festive to vary the twister head speed while the spindle speed remains unchanged.

2. In a wool spinning machine, a plurality of spinning spindles, means to drive said spindles, a plurality of twister heads, a twister cylinder and shaft, driving connections between said cylinder and said twister heads, a power shaft, a variable-speed mechanism between said power shaft and said cylinder shaft, and manual control means for said variable-speed mechanism effective to vary the twister head speed while the spindle speed remains unchanged, and said manual control means being located at the side of the machine for actuation by an operator in yarn-observing position.

FRANCIS B. KELLIHER.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,026,155 Abbott Dec. 31, 1935 2,229,673 Rosenfeld Jan. 28, 1941 

